Shelwyn Patt is led in cuffs from the 71st precinct in October 2012 after his arrest on charges of stabbing a B67 driver with a hypodermic needle, which he claims was based solely on a police sketch. Photo: Gregory P. Mango; Alex Rud

A Brooklyn man says he was falsely arrested for using a syringe to stab a bus driver and now he wants the city to fork over $14 million for ruining his life.

Shelwyn Patt, 54, filed suit in Brooklyn federal court Tuesday against the city, the NYPD and several police officers.

A madman jabbed bus driver Mark Salander with a hypodermic needle in October 2012 and Patt was busted for the crime two weeks later — based solely on his likeness to a police sketch of the culprit, his suit states.

Patt was riding the bus in downtown Brooklyn when driver Jose Rivera called cops after noticing his resemblance to the widely distributed drawing of the Salander stabber.

The suit claims that Patt was picked out of a police lineup — but that he was the only person with a mustache similar to the sketched suspect, a claim his lawyer also made at the time.

A retired Macy’s employee with no criminal history, Patt was arrested, held for 19 hours and trotted before media cameras before all charges were dropped five months later.

Patt claims in his suit that he suffered the added indignity of having a judge prohibit him from riding a city bus without an escort.

“He was bewildered and scared by having to go through the system without any evidence against him other than this sketch,” said his attorney Cary Kaplan.

“He had no criminal history and no prior arrests,” he said. “There was nothing connecting him to this crime.”

The attorney added that Patt had to shell out thousands of dollars to pay his criminal defense attorney.